Total Assets by Reportable Segment (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012		Dec. 31, 2011
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 4,532.4		$ 3,837.3
Commercial Aircraft
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	1,435.6	[1]	1,366.1	[1]
Consumables Management
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	2,739.8	[1]	2,156.8	[1]
Business Jet
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 357.0	[1]	$ 314.4	[1]

[1] Corporate assets (including cash and cash equivalents) of $479.0 and $304.6 at March 31, 2012 and December 31, 2011, respectively, have been allocated to the above segments based on each segment's respective percentage of total assets.